The last pre-PS4 PlayStation Store update is full of this Fall’s biggest PS3 releases…

2K Games released the alien invasion expansion XCOM: Enemy Within.

WB Games released a bigger Injustice: Gods Among Us package with the “Ultimate Edition.”

Ratchet & Clank rode off into the sunset in Insomniac’s Ratchet & Clank: Into the Nexus.

And Sony expanded the Wonderbook line of games with Diggs Nightcrawler and Walking With Dinosaurs.

Also available this week is a Cross-Buy version of Flower that will add the title to the game library on your PS3, Vita, and PS4.

More information on all of these games (and a few others) can be found after the break and a complete rundown of this week’s new game add-ons is available at the PlayStation Blog.

PS3 Full Games

XCOM: Enemy Within ($39.99)
XCOM: Enemy Within is the standalone expansion to the 2012 Game of the Year award-winning strategy game XCOM: Enemy Unknown. Enemy Within adds an incredible array of new abilities, upgrades and weapons to combat new enemy and alien threats. This expansion also introduces new maps and missions, new tactical and strategic gameplay, and new multiplayer content providing a fresh new gameplay experience.

Ratchet & Clank: Into the Nexus ($29.99)
After one of the most infamous manhunts in galactic history results in the capture of Vendra Prog, Ratchet and Clank offer to escort the dangerous criminal to the Vartax Detention Center. After a daring orbital jailbreak at the forgotten edge of the galaxy, Ratchet and Clank find themselves lost in an abandoned sector. There, in deepest space, they uncover an inter-dimensional event that threatens the universe—and forces Ratchet to decide what’s really important.

Injustice: Gods Among Us – Ultimate Edition ($59.99)
Injustice: Gods Among Us Ultimate Edition enhances the bold new franchise to the fighting game genre from NetherRealm Studios. Featuring six new playable characters, over 30 new skins, and 60 new S.T.A.R. Labs missions, this edition packs a punch. In addition to DC Comics icons such as Batman, The Joker, Green Lantern, The Flash, Superman and Wonder Woman, the latest title from the award-winning studio presents a deep original story. Heroes and villains will engage in epic battles on a massive scale in a world where the line between good and evil has been blurred.

Dynasty Warriors 7 ($29.99)
In Dynasty Warriors 7, follow the captivating story of four Kingdoms battling for rule of China! Experience the individual tales of the Shu, Wu, Wei and the new Jin kingdoms as they shape China from the warring chaos of the Later Han period to the division of the Land into Three Kingdoms.

Wonderbook: Diggs Nightcrawler ($14.99)
Can you help storybook detective Diggs unravel the truth behind Humpty Dumpty’s downfall? Wonderbook presents a film-noir inspired, detective story developed exclusively for the PlayStation®3 system in partnership with the Academy Award® winner Moonbot Studio.

Wonderbook: Walking With Dinosaurs ($29.99)
Grab your Wonderbook peripheral, dig up 150-million-year-old secrets and uncover dinosaur fossils, then stand back as the prehistoric giants come to life right before your eyes. Walk among giant herbivores such as Triceratops and Stegosaurus and come face-to-face with deadly predators including Mapusaurus and Tyrannosaurus.

PSN Games

Velocity Ultra ($9.99)
Velocity Ultra is the native PlayStation 3 system version of the multiple award-winning teleportation shoot ‘em-up Velocity! Featuring a new anime-influenced art style, touch screen to teleport, bombs on right stick, explosive visual effects, a Platinum trophy and PSN leaderboards, Velocity Ultra improves on the 2012 Game Of The Year and PSN Gamer’s Choice release in every area (except music ‘cos that rocked the first time around).

PS Vita Games

Injustice: Gods Among Us – Ultimate Edition ($39.99)
Injustice: Gods Among Us Ultimate Edition enhances the bold new franchise to the fighting game genre from NetherRealm Studios. Featuring six new playable characters, over 30 new skins, and 60 new S.T.A.R. Labs missions, this edition packs a punch. In addition to DC Comics icons such as Batman, The Joker, Green Lantern, The Flash, Superman and Wonder Woman, the latest title from the award-winning studio presents a deep original story. Heroes and villains will engage in epic battles on a massive scale in a world where the line between good and evil has been blurred.

PS3 + PS4 + PS Vita Cross-Buy Games

Flower ($6.99)
Flower lets you take control of the wind as you explore and navigate beautiful, lush environments using motion controls. Journey through varied landscapes at your own pace, interacting with and changing the environment as you go, and find balance and harmony in your surroundings.